jdk/src/java.base/share/classes/java/lang/classfile/attribute/InnerClassesAttribute.java
Shaojin Wen 3ebfc6c1e2 8342336: Optimize ClassFile imports
Reviewed-by: liach
2024-10-17 10:49:53 +00:00

74 lines
3 KiB
Java

/*
* Copyright (c) 2022, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package java.lang.classfile.attribute;
import java.lang.classfile.Attribute;
import java.lang.classfile.ClassElement;
import java.util.List;
import jdk.internal.classfile.impl.BoundAttribute;
import jdk.internal.classfile.impl.UnboundAttribute;
import jdk.internal.javac.PreviewFeature;
/**
* Models the {@code InnerClasses} attribute (JVMS {@jvms 4.7.6}), which can
* appear on classes, and records which classes referenced by this classfile
* are inner classes. Delivered as a {@link java.lang.classfile.ClassElement} when
* traversing the elements of a {@link java.lang.classfile.ClassModel}.
* <p>
* The attribute does not permit multiple instances in a given location.
* Subsequent occurrence of the attribute takes precedence during the attributed
* element build or transformation.
*
* @since 22
*/
@PreviewFeature(feature = PreviewFeature.Feature.CLASSFILE_API)
public sealed interface InnerClassesAttribute
extends Attribute<InnerClassesAttribute>, ClassElement
permits BoundAttribute.BoundInnerClassesAttribute,
UnboundAttribute.UnboundInnerClassesAttribute {
/**
* {@return the inner classes used by this class}
*/
List<InnerClassInfo> classes();
/**
* {@return an {@code InnerClasses} attribute}
* @param innerClasses descriptions of the inner classes
*/
static InnerClassesAttribute of(List<InnerClassInfo> innerClasses) {
return new UnboundAttribute.UnboundInnerClassesAttribute(innerClasses);
}
/**
* {@return an {@code InnerClasses} attribute}
* @param innerClasses descriptions of the inner classes
*/
static InnerClassesAttribute of(InnerClassInfo... innerClasses) {
return new UnboundAttribute.UnboundInnerClassesAttribute(List.of(innerClasses));
}
}